Effect of ultrasonication on the flotation of talc

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dc.contributor.authorFeng D.
dc.contributor.authorAldrich C.
dc.date.accessioned2011-05-15T16:01:47Z
dc.date.available2011-05-15T16:01:47Z
dc.date.issued2004
dc.description.abstractThe natural hydrophobicity of talc was depressed by the use of ultrasonic treatment during flotation. The recovery of the talc decreased by nearly 30% after 4 min of ultrasonic preconditioning. In addition, two talc depressants, namely, IMP4 and carboxymethyl cellulose (CMC), were compared during ultrasound treatment. The guar gum IMP4 showed a better depressant ability than the CMC. The effects of these depressants on talc were enhanced by ultrasonication, preferably by adding the depressants before ultrasonic treatment. Microtopographic studies by atomic force microscopy indicated that surface defects generated by ultrasound could serve as active sites for water adsorption, rendering the naturally hydrophobic talc hydrophilic. The enhanced formation of the hydrophilic magnesium and silicon hydroxyl species on talc surfaces slightly affected the natural hydrophobicity of talc in the presence of ultrasound as well.
dc.description.versionArticle
dc.identifier.citationIndustrial and Engineering Chemistry Research
dc.identifier.citation43
dc.identifier.citation15
dc.identifier.issn8885885
dc.identifier.urihttp://hdl.handle.net/10019.1/12155
dc.subjectCellulose
dc.subjectFlotation
dc.subjectHydrophilicity
dc.subjectHydrophobicity
dc.subjectSilicon compounds
dc.subjectUltrasonics
dc.subjectDepressants
dc.subjectUltrasonic preconditioning
dc.subjectUltrasonication
dc.subjectTalc
dc.subjectcarboxymethylcellulose
dc.subjectguar gum
dc.subjectinosine phosphate
dc.subjectmagnesium
dc.subjecttalc
dc.subjecthydrophobicity
dc.subjectadsorption
dc.subjectarticle
dc.subjectatomic force microscopy
dc.subjectconcentration (parameters)
dc.subjectflotation
dc.subjecthydrophilicity
dc.subjecthydrophobicity
dc.subjectsurface property
dc.subjectultrasound
dc.titleEffect of ultrasonication on the flotation of talc
dc.typeArticle
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